Home / 5,485-8,228.36-1,786.36

Finding the Fourth Proportional to 5,485, 8,228.36 and 1,786.36

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Solution

The fourth proportional to 5,485, 8,228.36 and 1,786.36 is: 2,679.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485 : 8,228.36 = 1,786.36 : x
  2. Step 2: Convert to fraction form
    5,485/8,228.36 = 1,786.36/x
  3. Step 3: Cross multiply
    5,485x = 8,228.36 × 1,786.36
  4. Step 4: Simplify right side
    5,485x = 14,698,813.17
  5. Step 5: Solve for x
    x = 14,698,813.17/5,485
  6. Step 6: Final answer
    x = 2,679.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.